You work for Northwest Fasteners, Inc., a manufacturing company that makes rivet

Question

You work for Northwest Fasteners, Inc., a manufacturing company that makes rivets for construction ofcommercial aircraft. The rivets are made from an aluminum alloy and have very strict strength requirements. Your contract with Boeing states that 97% of the rivets must pass a strength test. It does not cost very much to test a rivet. You just put it into a machine and the machine stresses it until it breaks, then the machine shows the breaking strength of the rivet. Your manager wants you to provide evidence that your rivets meet the 97% contract requirements so you think about testing all the rivets that come off the line. Fortunately, you noticed that the test for the rivets is destructive, meaning the rivet is destroyed in the test. That means you can't really test them all.

Your group is tasked with coming up with a plan to provide evidence that your production process meets the strength requirements 97% of the time.

Write a proposal (a general outline) to your manager of your plan and explain how it would provide evidence that you are meeting the contract requirements. (Cannot be Null or Alternate Hypothesis)

Explanation / Answer

Hello!

Our proposed analysis is as follows:
* First, we take a randomly chosen sample of rivets using simple random sampling.

* We will set for testing the confidence level of 97% (or 98%).

* We will take the sample and assign the binomial distribution, so we need to set a parameter of how many are damaged. then we calculate the probability distribution with said that all these screws (preferably 3% are damaged).

* Do testing all damaged rivets. If you are more damaged rivets than expected, more than 3%, then we are in trouble, not being fulfilled the contract.

* The likelihood serve to establish how likely it is that 3% of the rivets are damaged.

Regards!

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